I have a Ford KA which is tiny with a teeny weeny boot and I have been wondering the same thing, I googled this morning and came up with a few options:
Bebe Confort Streety https://tbn2.google.com/images?q=tbn:k8z6NF32ZZ1QkM:https://www.jolly-tots.co.uk/images/pram.jpgor Bebe Confort Loola https://tbn0.google.com/images?q=tbn:WO6c21ynI--6fM:https://www.babykitdirect.co.uk/gfx/media/home/shop/bebeconfort/2008images/loolacreatiswindoooxyred.jpgor the Graco Quattro Tour Deluxehttps://tbn1.google.com/images?q=tbn:leDRa_3ZshUKRM:https://www.babyretail.co.uk/acatalog/graco_quattro_tour_deluxe_tsb_butterscotch(1).jpg (but I have ruled this one out cos I don't like the colours!)
The reviews are good on them (mostly) and seems from what they say that they fit in ok, hope that helps